Warp stop-motion for looms.



No. 733,077. PATENTED-JULY 7, 1903. H. A. OWEN. WARP STOP MOTION FOR LOOMS.

APPLIGATION FILED MAR. 11, 1901.

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N9; 733.077. PATENTED JULY 7, 1903. H. A. OWEN.

WARP STOP MOTION FOR LOOMS.

gPPLIOATION FI'LED MAR.11, 1901.

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UNITED STATES Patented d'uly a. 1903 ATENT OF ICE.

HENRY A. OWEN, OF lrVI-IITINSVILLE, MASSACHUSETTS, ASS IGNOR TO THE WHITIN MACHINE WORKS, INCORPORATED, OF WI-IITINSVILLE, MASSA- OHUSETTS.

WARPSTOP-MVOTION FOR LOOMS;

SPEGIFIGATION forming part of Letters Patent No. 733,077, dated July 7, 1903.

Application filed March 11, 1901. Serial No. 50,667. (No model.)

. To all whom it may concern.-

Be it known that I, HENRY A. OWEN, a citizen of the United States, residing at Whitinsville, in the county of WVorcester and State of Massachusetts, have invented a new and useful Improvement in Warp Stop-Motions for Looms, of which the following is a specification.

This invention has reference to an improvement in mechanism for automatically stopping the loom when a warp-thread breaks.

Figure 1 is an end view of part of a loom, showing an improved warp stop-motion in connection with the same. Fig. 2 is a side view, partly in section, of the detect-or part of the warp stop-motion, showing one of the detector-plates suspended from a warp-thread in the normal position, Fig. 3 is a side view, partly in section, of the same parts as in Fig. 2 in the operative position when thewarpthread supporting the detector plate has broken, Fig. 4 is a top 'view, partly insection, of one end of the feeler of the stop-inotion, showing the bracket, the tube supported therein, the detector-plates, the rockingbar, and the lever secured to the rocking bar Similar marks of reference indicate corre- ,sponding parts in all the figures. 1

In the drawings, A indicates the end frame of the 100111 B, the warp-beam O, the warp D, a member of the loom stop mechanism, preferably the arm, by which the shipper-lever is secured; E, the lay, and F the cam-shaft. The bracket a, as shown, is secured to the whip-roll stand A, which is attached to the end frames, there being one on each end the whip-roll stand A".

frame; but the bracketa may form a part of The tube a extends from the bracket 'a on one end of the 100111 to the bracket or on the other end and is secured in the bracket by the set-screw a so as to be firmly held against longitudinal and rotary movement. The tube a, has the slot a in its upper side, the said slot extending practically the length of the loom across the width of the warp. The stop a preferably consisting of a tube, is also supported at the opposite ends on the brackets a a. WVithin the tube a. is supported the rocking bar I), preferably formed of the crescent-shaped section b with round ends, one of which projects be yond the end of the tube a. To the projecting end of the rockingbar the lever b having at its freeend the pivot I), is secured. On the pivot 12 the connector 11 provided at its lower end with the slotted link 12 is supported. The link 12 engages with a pin on the crank b secured to the cam-shaft F.

The bar 0, provided with the shoulder c, has at the front end a fork 0 supported on astud e projecting from the end frame, and is provided with the knock-0E stud o bearing on the knock-off lever D, which holds the shipper-lever in the operative position. A bracket 6 is secured to the lay, which when the bar 0 is raised may engage with the shoulder 0.

I do not wish to confine myself to the exact construction and arr rgement of the part of the bar 0, connecting with the knock-oif mechanism, as the same may be modified to best suit the knock-off mechanism of the loom.

The rear end of the bar 0 extends obliquely downwardly and has at its lower end the plate 0 The bar 0, supported at the front end on the stud and bearing 011 the stop-lever D, is

supported at the oblique rear part on the pin 0 A series of detector-plates (1, having the opening d, are supported on the individual warp-threads. These detector-plates d, usually made of thin sheet-steel, have the opening (Z of a width slightly greater than the diameter of the tube a and, of a vertical length greater than the diameter of the tube a. The upper end of the opening (1 is con tracted toward the center on curved lines corresponding with the tube a against the stop (i projecting into the opening and formed to enter the slot 60 in the tube a,

WVhen the loom is in its normal operation, the series of detector-plates d are suspended from the series of warp-threads and are held in the vertical position by the tube aand the stop a against the strain in taking up the warp..

The rocking bar I) rocks in the tube a, so that the crescent part of the bar passes under the slot of, as is shown in Fig. 2, and to one side of the slot, as is shown in Fig. 3.

The operation of the rocking bar I) is produced by the rotation of the crank Z)", which carries the link b and the lower end of the connector b around and past. the plate in the direction indicated by the arrow in Fig.

1, thereby moving the lever b from the position shown in solid lines to the position shown in broken lines in Fig. 1, and vice versa. When now a warp-thread breaks, the detectorplate connectedwith the thread drops, the stop 01 enters the slot a and rests on the crescent portion of the rocking bar b until the lever 12 is in the position shown in broken lines in Fig. 1, when the stop d drops in front of the crescent-shaped section of the rocking oar and locks the same, as is shown in Fig. 3, and with it the lever 17 The connector 19 swings now on the pivot b and as the crank 11 revolves the pin on the crank slides in the link I) and carries the upper end of the link under the plate 0 moving the link I), the connector 19 and the bar 0 into the position shown in broken lines in Fig. l, where near the backward swing of the lay the bracket 6 encounters the shoulder 0, draws back the bar 0, and operates the stop mechanism to stop the loom.

In piecing up the broken warp-thread the detector-plate may be swung sufficiently on the tube a to bring the opening (1 to the rear of the adjacent plates to facilitate theinsertion of the warp.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In awarp stop-motion for looms, the combination with a series of detector-plates provided with stops and supported individually by a warp-thread, of a slotted tube rigidly secured to the end frames, a rocking bar in the slotted tube, means, comprising a swinging connector, having a link connected with a crank, the crank, and connections with the loom stop mechanism operated by the link when a warp-thread is broken, and means connected with the lay whereby the loom is stopped, as described.

the rocking bar, a swinging connector pivotally connected to the rocking bar by a lever and having a link, the lever, means controlling the movement of the connector and link;

means connect-ed with the lay and means operated by the connector and link for stop ping the loom, as described.

. 3. In a warp stop-motion, in combination with a longitudinally-slotted tube secured against rotation, a rocking bar in the slotted tube, detector-plates provided with a stop adapted to enter the slot of the tube, a lever on one end of the rocking bar, a connector pivoted on the lever at one end and provided with an open link on the other end, a crank on the cam-shaft, the pin of the crank controlling the movement of the link, and means operated by the link and connector for stopping the loom when a warp-thread breaks, as described.

4:. In a warp stop-motion for looms,the combination with a series of detector-plates supported by the warp-threads, and having the openings d and the stops 61 therein, the slotted tube a, means for securing the tube against rotation, the rocking bar I), mechanism connected with the rocking bar to operate the same, the bar 0, the loom stop devices, means for swinging the said bar 0 into engagement with the loom stop mechanism when a warp-thread breaks, as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY A. OWEN.

WVitnesses:

J. A. MILLER, J r., A. E. IIAGERTY. 

